I recently bought a late-70's road bike which has Dia-Compe centerpull brakes. I put on some Kool Stop "Continental" brake pads, which are a bit better than the original pads.
However, I can't get the pads to the hit the rim at the correct angle. Due to the angle of the brake arms, the pads tend to hit with the top edge first, and both pads are toed out a fair amount. As a result, the brakes squeal like crazy, and the braking, while decent, is not as good as I'm used to with dual-pivot brakes.
There doesn't seem to be any way to adjust the alignment of the pads relative to the brake arms -- they just bolt on without any of the fancy hardware that newer-style pads seem to have, so they are always perpendicular to the arms.
Is there any way to get the pads properly adjusted on this type of brake? Or did people in the 70's just live with crappy brakes all the time? ;-)